Inventor · disambiguated record

David H. Butcher

Also filed as: BUTCHER DAVID H · BUTCHER DAVID HENRY

2 granted patents·11 citations·filing 1975–1986

53Inventor score

Technology areasE04D F02D

Files withBUTCHER DAVID H1 WORLD PATENT IMPROVEMENTS S A1

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2 records

0123US4704312AThermal insulating materialWORLD PATENT IMPROVEMENTS S A·Filed 1986·Granted Nov 3, 1987·10 cites·9 claims
0215US4100893APressure-responsive transducer for regulating internal combustion engineBUTCHER DAVID H·Filed 1975·Granted Jul 18, 1978·1 cites·14 claims

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David H. Butcher — Patent Inventor | PatentIndex